Previously I was able to sync and get DAO tokens and everything worked. Yesterday I closed the wallet to free up resources for the day and relaunched it before bedtime. However, it did not sync overnight. I quit it and restarted.

It seemed to be syncing ok. But then:

1) The application starts but says INVALID TIME in the top bar.2) Application window is frozen: cant scroll or click account button.3) Clicking "Close Window" stops geth and one instance of ethereum-wallet (three still run)

I have tried changing the time server to time-nw.nist.gov and rebooting.